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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 571Random Lasing Emission Form Granular-Surface...

Random Lasing Emission Form Granular-Surface PS/PMMA Blend Films

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Abstract:

The random lasing emission from granular-surface PS:PMMA:Alq3:DCJTB blend films was investigated. By micro-phase separation of PS:PMMA:Alq3:DCJTB blend in spin-coating and solvent evaporation process, we obtained a granular-surface waveguide film with gain on glass substrates, whose period is about 200~500nm, and fluctuation is about 20nm. Pumped by THG YAG laser, a significant random laser emission was observed. Compared with the samples of glass/PMMA:Alq3:DCJTB and glass/ PS:Alq3:DCJTB prepared under the same conditions, the laser threshold decreased about 5 times, the line width at half (FWHM) reduced to 1.7nm from more than ten nm, and the quality factor of laser peak increased 7-9 times.

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Periodical:

Advanced Materials Research (Volume 571)

Pages:

110-114

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.571.110

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Online since:

September 2012

Authors:

Xuan Ke Zhao

Keywords:

AFM, Micro-Phase Separation, Polymer Blend, Random Laser

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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